Means for governing the speed of wind-motors.



A. P. TURNBULL.

MEANS POR GOVERNING THE. SPEED 0F WIND MOTORS.

APPLIGATIOH FILED APRJZ, 1912.

Patented Sept. 29, 1914.

2 SHEETSWSHBET l.

L INVEN-ron. Alf-Ted Percy T nbull WITNESSES SM @www ATTORNEYS [THENORRIS PETERS CO.. PHOTO LITHO., WASHINGTON. D. C4

A. i. TURNBULL.

MEANS Foa GOVBRNING THB SPEED 0F WIND MOTORS.

APPLICATION PILE) APR. l2, 1912.

Patented Sept.`29, 1914.

2 SHEETS-SHEET 2.

INVEN-rovz n AlFred Percy Tzrnbull BY WITNESSES afm ATTO RN E Y THENDRRIS PETERS CD., PHOTO-LITHO-Y WASHINGTON, DA C.

ALFRED :PERCY TURNBULL, OF SYDNEY, NEW SOUTH WALES, AUSTRALIA.

MEANS FOR GOVER-NING- THE SPEED 0F WIND-MOTORS.

Specicaton of Letters Patent.

Patented Sept. 29, 1914.

Application filed April 12,1912. Serial No. 690,390.

To @ZZ whom it may concern:

Be it known that I, ALrrnD PERCY TURN- BULL, a subject of the King ofGreat Britain and ireland, residing` atl Romsey, Victoria street,llandwick, Sydney, in the State of lflew` South W'ales and Commonwealthof .nstralim have invented a new and useful improved Means for Governingthe Speed of illind-Motors, of which the following is a specification.

Heretofore the tail piece and the pivoted head frame carrying the windwheel have been geared together so that the latter may automaticallyturn toward the tail piece and out of the wind, such movement beingcounteracted by an adjustable opposing factor such as a weight orspring.

Tl particularly to the above principle wherein the wind wheel hasindependent movement in relation to the tail piece against a coun`tcracting factor, and provides such mechanical improvements in theapplication of that principle that the sensitiveness of the governingdevice is considerably enlarged, the structural. arrangements simplifiedandthe regulation device so arranged that while it is adapted to beaccessible from the base of the tower it is also adapted to be renderedinoperative whereby the wind wheel is permitted to move out of action.And according to this invention these improvements with the objectsspecified are effected by vertically hinging the tail piece to thepivoted head frame, and positioning the wind wheel at such a distanceforward of the axis of the pivot that the wind pressure acting 0n thesurface of the wind wheel imparts a predetermined effort to the same torotate about said pivot and toward the hinged vane which latter remainsparallel in the direction of the wind, the effort mentioned beingeffected against an adjustable counteracting factor such as a weight orspring. The counteracting factor is so arranged or connected to thehinged vane and the pivoted head frame as to normally retain the windwheel in the wind until the maximum speed required is` exceeded when therotary motion of the wind wheel about the axis common to it and` thehead frame takes place against: the opposing factor. The counteractingdevice is rendered inactive from the base of the tower for the purposeof allowing the wind wheel to rotate out of the wind and becomeinoperative when desired.

,ie present invention, therefore, relates pictedvin the preceding gures,Fig. 4 being` a modification of the counteracting factor consisting of acoil spring positioned at the base of the tower.

Referring to the drawings, the vane or tail piece 17 of the plain or Ytype is vertically hinged between the free ends 18 of the parailel rods19 whose other ends 20 are affixed` to the pivoted or rotatable headframe21 mounted on ball bearings 22 upon the bed plate 23 affixed at thetop of the tower 24.

The counterweight 25 is suspended between guides 26 dependent from thelower of the parallel rods 19 carrying the'wind vane 17, the suspensionrope 27 passing throughpullevs 28 mounted on the stay 29 positionedbetween the parallel rods 19, `from which pulleys the rope 27 divergesin opposite di-` rections, one member passing over pulley 30 mounted onthe arm 31 attached to the upper of the `rods 19 and secured to thehinged vane 17 and the other member passing over pulley 32 mounted onthe pivoted frame 21 thence through orifice 33 provided in the saidframe and its bed plate 23 to the base of the tower. The portion of therope passing to the base of the tower is provided with a swivel jointlto take up the twist.

In Eig. 4 the counteracting factor shown is that of a coil spring 34positioned at the base of the tower, being supported upon thecircular-plate 35 pivotally attached to lever 36 that is fulcrumed at'37 to the framework of the tower 2li; said spring taking between plate35 and the cross head 38 supported by vertical rods 39 whose top endsare screw threaded and provided with nuts 40 for the purpose ofadjusting the position of thel cross head 88 and consequently alteringthe tension of the spring 34.

In operation, the wind wheel being so positioned at a distance forwardof the axis of the pivoted head frame 21 that it has a decided tendencyto rotate out of the wind and toward the tail piece 17, it will when Citexceeding the maximum speed required (which speed is determined by thecounteracting weight 25 or spring 34) rotate with the pivoted frame uponthe vertical axis common to both, against the power of the counteractingdevice. The movement of the parallel rods l) a'liiXed to the pivotedhead frame 2l draws up the weight 25 K (or compresses the spring 34 asthe ease may be) as shown in Fig. l which weightmovement or springvcompression continues with increasing wind pressure until the wind wheeltakes up ya position out of the wind and .parallel Ior approximately:parallel to the tail piece as indicated by heavily dotted lines (a) inF ig. 3 in which diagrammatic figure the full lines `(b) indie-ate theposition of the parts when .the wheel is partly out of the wind and thefaintly dotted lines (c) when the .wheel is fully in the wind, whichlatter posi- ),tion is maintained by the counterweight 25 forfspring34until the maximum speedlis eX- Tcleeded. The vane 17 .being hinged tothe rods 19 remains parallel with the direction of the wind as shown.lWhen required for ,any I.reason to render the wind wheel inoperativelthe weight 25 is raised by hauling on the auxiliary portion of the rope27 that i l passes to the base of the tower the rope bemade fast whenthe weight is suciently raised-to permit the wind wheel to swing outofthe wind 4and into position (a) Fig. 8 or where .a spring such as 34is employed the ysame iis com pressed by raising the lever 86 which isthen secured by the hooked member 41 depending from the free end of theJorlacket 42 affixed to the framework of the tower 24 y(see Fig. 4).

Ieljaims- Il. In means for ,governing the speed of wi-nd motors, atower, a head mounted to turn-,on the tower and carrying a pulley, awind .wheel mounted on the head, laterally. projecting and spaced rodson the head and carrying two pulleys intermediate their ends, .a .tailpiece pivoted between the outer Lends of the said rods, an armprojecting from the upper rod at an angle thereto, and carrying apulley, guides depending from the lower rod opposite the pulleys of saidrods, a weight sliding in said guides, and a rope or cable secured tothe weight and having diverging members, one member passing over one ofthe pulleys of the rods and the pulley of the arm and secured to thetail piece, and the other member passing over the other pulley of therods and the pulley of the head and extending down to the base of thetower.

2. ln a device of the character described, power structure, a frameworkmounted to rotate on the vertical axis of said power structure, saidfran'iewoi'k having a radially positioned tail piece receiving memberand a wind wheel receiving member oifset from 'the radial line drawnthrough said vertical axis and said tail piece receiving member, awindwheel mounted on said wind wheel receiving member, a pivotally mountedtail piece arranged on said tail piece receiving member, a bracketextending from the end of said tail piece receiving member at an anglethereto, a pulley on the end of said bracket, a cable connected to saidtail piece extending over said pulley, a second pulley for said cablefor guiding the same into a vertical direction to the base of the powerstructure, and a weight mounted on said cable below said secondmentioned pulley whereby said tail piece is held normally as acontinuation of said tail piece receiving` member of said framework, butis permitted to move from that position when said wind wheel hasattained a predetermined speed by reason of pressure thereon as thetendency of said wheel to rotate around said vertical aXis will begreater tha the resistance of said weight thus causing` the tail pieceto turn .the wind wheel out of the wind.

ALFRED PERCY TURNBULL.

lllitnesses ROBERT J. KNOX, H. C. CAMPBELL.

.C'opies of this patent may he obtained for ve cents each, by addressingthe Commissioner of Eatents,

' Washington, I). C.

